Iiungary



(No Model.)

F. W. SGHINDLER-JENNY.

ELECTRIC BOILER.

Patented Apr. 28, 1896.

ANnREW BLRAHAM. PHOTU-IJ'muwASMINGfON, D C

UNITED STATES PATENT OFFICE.

FRIEDRICH VIIIIIICIIM SCIlINDLER-JENNY, OF KENNEIIBACI-I, AUSTRIA HUNGARY.

ELECTRIC ABOILER.

SPECIFICATION forming part of Letters Patent No. 559,223, dated April 28, 1896.

Application filed October 2, 1895. Serial No. 564,441. (No model.)

To all wil/m t may con/cern.'

Be it known that I, FRIEDRICH WILHELM SCHINDLER-.IENNY, a citizen of Switzerland, residing at Kennelbach, near Bregenz, Austria-Hungary, have invented new and useful Improvements in Electric Boilers, of lwhich the following is a specification.

My invention relates to ring-shaped boilers in which resistance-wires are placed in aring of refractory insulating material, which latter is contained in a hollow casing; and the object of my invention is to provide a most simple and most' efficient apparatus.

My invention is illustrated in the accompanying drawings, in which- Figure l is a partially sectional view of Iny boiler; and Fig. 2, a top view of the lower part of the casing, showing placed therein the ring which contains the resistance-wires.

The ring a,which contains the electric conductors or resistance-wires, is run through by longitudinal circular channels l), preferably placed near its outer surface. It may be made in one piece or composed of several parts joining to each other with their ends, as shown in Fig. 2, and fills up the hollow of a ring-shaped easing of metal, the two parts c c3 of which I prefer to detachably connect together.

Fig. 2 represents the lower part c of the casing and the ring a placed therein. rlhe latter part is crossed by a hollow bridge f, likewise iilled up by a strip t' of refractory insulating material, projecting at one end to the left of the drawings into the hollow of the casing, ring a being retrenched opposite to that end of strip i. Strip t' is provided with longitudinal channels h 7b3 h3, discharging at 7U" 7e3 k3, respectively, on the upper side of its middle part, which is left free by an opening Z in the upper Wall of bridge f. A tube m is connected to the said bridge, joining with its trumpet-shaped lower end to the opening Z, and is likewise iilled up by a cylinder n of refractory insulating material, the lower end thereof being in contact with striptl through opening Z, and longitudinal channels o 02 03 are provided in the cylinder n, joining t0 the discharging-openings k k3 7a3, respectively.

Tube m is bent tothe side at its upper end and provided with a handle p.

The resistance-wires and the connectingwires are disposed as follows: A thin resistance-wire q passes through each of the channels l) of ring a, the wire being either simply thread-shaped or spirally coiled. All the wires discharging from the end @c of ring a enter the channel h/ of strip t', while the wire ends discharging from the other end y of ring ci. are assembled in two groups, three of the eight wires, as illustrated, entering the channels 7L3, and the remainder-t'. e., five in the present instance-entering channel h3. The said groups of resistance-wires pass through the openings 7c 7a3 7c3 to the channels 0 o2 03 of the cylinder n, and are connected in groups to the connecting-wires D D3 D3, respectively, which project from the handle p, as shown, Fig. l. The latter Wires are insulated in any convenient Inanner against each other and the walls of tube m and handle p. v By these means wire D being connected to the end of all the resistance-Wires and wires D2 D3 to the other end but of five or three of the resistancewires, respectively, the operator is enabled, by conveniently combining the wires D D3 D3 to the outer main line, to heat either but three, or but ve, 0r finally all the resistance-wires in order to regulate the degree of the heat developed.

Vhen connecting, say, the negative mainline wire to wire D and in the same time the positive main-line wire to wire D2 or to wire D3, there will be heated either five or three of the resistance-wires accordingly; but when conncetin g the positive main-line Wire in the same time to both wires D2 D3 there will be heated all the resistance-wires at once.

If there shall be had no reference to regulating purposes, all the wires q, discharging from the end 'y of ring a, Inay be combined to one group, and the number of channels 71. 0, openings k, and wires D should be reduced to two and two.

It will be obvious that in order to increase the regulating faculty the discharging ends of the resistance-wires may be combined to more than two groups and the number of the respective channels, openings, and connecting-wires accordingly increased.

Although it Will be convenient to lead freely the resistance-Wires through the respective channels of ring a, strip t', and cylinder n, so as to be enabled to easily remove the Wires in case of repairing or changing the same when partially or Wholly damaged Without being needed to throw away the several insulatingbodies, I do not confine myinvention thereto, which is independent of placing the resistance-Wires in or securing to the said insulating-bodies, Whether they may beleaded freely or firmly connected thereto by embedding the saine into the several insulating-bodies or afterward filling up the channels by a plaster and the like. My invention likewise comprehends, broadly, the combination of a ringshaped insulating-body and a casing, no matter Whether the parts of the latter are detachably or not detachably connected together.

XVhat I do claim, and desire to secure by Letters Patent, is-

l. An electric boiler consisting of a ringshaped heating-body of refractory insulating material, containing resistance-wires longitudinally extending through the heatingbody, and a casing in close contact with the said heating-body, substantially as set forth and for the purpose specified.

2. An electric heater consisting of a ringshaped heating-body of refractory insulating material7 containing resistance-wires longitu dinally extendin g throu gli the heati 11g-body near its surface, and a casing in close contact With the said body substantially as set forth and for the purpose specified.

An electric boiler consisting of a ringshaped heating-body of refractory insulating material, containing resistance-Wires longitudinally extending through channels of the heating-body, and a casing in close contact with the said heating-body, substantially as set forth and for the purpose specified.

4. An electric boiler consisting of a ringshaped heating-body of refractory insulating material, containing resistance-Wires longitudinally extending through channels of the heating-body near its surface, and a casing in close contact with the said heating-body, substantially as set forth and for the purpose specified.

5. An electric boiler consisting of a ringshaped heating-body of refractory insulating material, containing resistance-Wires longitudinally lextending through the heatingbody, and a casing in close contact with and detachably connected to the said heatingbody, substantially as set forth and for the purpose specified.

In Witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

FRIEDRICH WILHELM SCHINlIlillli-JENNY.

IVitnesses:

II. WiNrsci-r, F. C. TENNI. 

